Were you aware that James Dean was in a John Wayne movie? In the movie Trouble Along the Way with Duke and Donna Reed, Dean had a part in the 1953 movie as a Football Spectator. It was an uncredited part. I am not sure where in the movie Dean makes his scene, but after looking in the James Dean filmography, I found his name listed.
I thought you would have found this interesting.
Cheers Hondo Duke Lane